CN201756917U - Production pipe for coal bed gas - Google Patents
Production pipe for coal bed gas Download PDFInfo
- Publication number
- CN201756917U CN201756917U CN2010202862626U CN201020286262U CN201756917U CN 201756917 U CN201756917 U CN 201756917U CN 2010202862626 U CN2010202862626 U CN 2010202862626U CN 201020286262 U CN201020286262 U CN 201020286262U CN 201756917 U CN201756917 U CN 201756917U
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- pipe
- water injection
- injection pipe
- water
- row
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Abstract
The embodiment of the utility model discloses a production pipe for coal bed gas. The production pipe comprises an oil pipe component and a water injection pipe, wherein the oil pipe component comprises an oil pipeline, a screen pipe and a plug; and the water injection pipe enters an annular space through the wellhead of a straight well, is arranged parallel to the oil pipe component, and is fixedly connected to the oil pipe component. By adopting the design that the water injection pipe is arranged in the annular space, the water injection pipe can be used for spraying water to a pocket in the straight well, so as to enhance the flowability of coal slack or the mixture of pulverized coal and water in the pocket. Therefore, the coal slack or the mixture of pulverized coal and water can enter into the oil pipeline through the screen pipe smoothly. Moreover, the coal slack or the mixture of pulverized coal and water can not be stacked when water is sprayed to the pocket in the straight well through the water injection pipe, so that the utility model solves the problem that a production pipe string can not work after being blocked by the coal slack or the mixture of pulverized coal and water.
Description
Technical field
The utility model relates to the coal-bed gas exploitation field, more particularly, relates to a kind of coal bed gas row and adopts pipe.
Background technology
At present,, adopt and row to be adopted row that the pipe string is arranged at the multi-branched horizontal well correspondence adopt in the pocket below the target coal seam of straight well, the ickings or the coal dust that are used for extracting the water that from horizontal hole, flows out and are brought out along with current in the coal-bed gas exploitation field.
As shown in Figure 1, row of the prior art adopts pipe string and has comprised oil pipe combination and sucker rod combination, and described oil pipe makes up and includes: be positioned at screen casing 2 that plug 3 bottom is connected with plug 3 and the oil pipe pipeline 1 that is connected with screen casing 2.Described sucker rod combination includes: sucker rod 7 and the pump 6 that is attached thereto.The concrete course of work that described row adopts the pipe string is: the mixture of 4 ickings or coal dust and water flows into the pocket bottom in the described pocket 5 in the horizontal well, and when its liquid level was higher than screen casing 2, described mixture can flow into oil pipe pipeline 1 through the sieve aperture of described screen casing 2.Like this, described sucker rod 7 drives described pump 6 by rotation or lifting the described mixture of pocket 5 is delivered to ground.
But the inventor finds that there is following shortcoming at least in the technical scheme of being taked in the prior art:
The water that flows into to described pocket when near the stratum described horizontal well and the described pocket can make that the mixture flowability of ickings or coal dust and water is very poor, thereby can't be delivered to ground by described pump seldom the time.When the mobile difference of described mixture to a certain degree the time, described mixture also might can't pass through described sieve aperture, along with the continuous accumulation of described mixture, can row adopt the pipe string bury dead, thereby the row of causing adopts to manage and goes here and there and can't work.
The utility model content
In view of this, the utility model embodiment provides a kind of coal bed gas row to adopt pipe, to realize making the mobile purpose that strengthens of mixture of ickings or coal dust and water.
To achieve these goals, the utility model embodiment provides following technical scheme:
A kind of coal bed gas row adopts pipe, comprises oil pipe assembly and water injection pipe;
Described oil pipe assembly comprises oil pipe pipeline, screen casing and plug;
Described water injection pipe enters the annular space space by the straight well well head, and be arranged in parallel with described oil pipe assembly, and is fixedly connected on the described oil pipe assembly.
Preferably, in the utility model embodiment, the delivery port position of described water injection pipe is lower than the position of described screen casing.
Preferably, in the utility model embodiment, the delivery port position of described water injection pipe is lower than 1 to 2 meter of the position of described screen casing.
Preferably, in the utility model embodiment, also be equiped with tubing nipple between described screen casing and the plug; Delivery port one end of described water injection pipe is fixedlyed connected with described tubing nipple.
Preferably, in the utility model embodiment, described water injection pipe is fixedlyed connected with the oil pipe assembly by tubing centrilizer.
Preferably, in the utility model embodiment, described water injection pipe is a continuous conduit.
Preferably, in the utility model embodiment, described continuous conduit is the plastic-aluminum pipe.
Preferably, in the utility model embodiment, the caliber of described plastic-aluminum pipe is 4/8 inch or 6/8 inch.
Preferably, in the utility model embodiment, described water injection pipe enters the annular space space by the straight well well head and is specially: be provided with the water filling threeway between the well head production tree of straight well well head and sleeve gate, described water filling threeway is communicated with described well head production tree and sleeve gate and also is provided with water inlet; The water inlet end of described water injection pipe is communicated with described water inlet.
Preferably, in the utility model embodiment, described water inlet also is provided with valve.
Can draw from technique scheme, the utility model embodiment is by being provided with the design of water injection pipe in the annular space space, thereby can use the pocket of described water injection pipe in straight well to spray water filling, make the ickings in the described pocket or mobile enhancing of mixture of coal dust and water, and then can enter in the oil pipe pipeline by the smooth screen casing that passes through.And, spray water filling by the pocket of described water injection pipe in straight well, can also make the ickings in the described pocket or the mixture of coal dust and water can not pile up.Thereby avoided in the prior art, the water that flows into to described pocket when near the stratum described horizontal well and the described pocket is seldom the time, and the mixture flowability of ickings or coal dust and water is very poor, thereby can't be delivered to ground by described pump.When the mobile difference of described mixture to a certain degree the time, described mixture also might can't pass through described sieve aperture, along with the continuous accumulation of described mixture, can row adopt the pipe string bury dead, thereby a series of problem such as can't work of going here and there of managing is adopted by the row of causing.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 adopts the tubular structure schematic diagram for the row of coal bed gas described in the prior art;
Fig. 2 adopts the structural representation of pipe for the row of coal bed gas described in the utility model embodiment;
Fig. 3 adopts the structural representation of pipe in the straight well notch portion for the row of coal bed gas described in the utility model embodiment;
Fig. 4 adopts the another structural representation of pipe for the row of coal bed gas described in the utility model embodiment.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
In order better to understand the utility model embodiment, below be the respective description that some technology contents that are applied among the utility model embodiment are done:
The utility model embodiment provides a kind of coal bed gas row to adopt pipe, as shown in Figure 2, comprises oil pipe assembly and water injection pipe 21; Described oil pipe assembly comprises oil pipe pipeline 11, screen casing 12 and plug 13; Water injection pipe 21 enters annular space space 22 by the straight well well head, and be arranged in parallel with described oil pipe assembly, and is fixedly connected on the described oil pipe assembly; The delivery port position of described water injection pipe 21 is lower than the position of described screen casing 12.
The utility model embodiment has compared with prior art set up water injection pipe 21.Water injection pipe 21 is installed in the outside of oil pipe pipeline 11, just in the annular space space 22 of straight well.Water injection pipe 21 is parallel with oil pipe pipeline 11, is fixedly connected on oil pipe pipeline 11, screen casing 12 or the plug 13 in the oil pipe assembly.Preferably, the scheme that adopts in the utility model embodiment can be by the tubing centrilizer on oil pipe pipeline 11 14, and water injection pipe 21 is fixed on the oil pipe pipeline 11.Concrete, can adopt metal tape or wire 23 that described water injection pipe 21 is fixed together with tubing centrilizer 14, because the fixed-site of tubing centrilizer 14, thereby can avoid described metal tape or wire 23 to slide up and down at described oil pipe pipeline 11.In addition, described tubing centrilizer 14 generally equidistantly distributes on oil pipe pipeline 11, so also can be so that water injection pipe 21 is equidistant with the link position of oil pipe pipeline 11, help more that water injection pipe 21 is connected with oil pipe pipeline 11 firmly.In addition, the screen casing 12 on water injection pipe 21 and described oil pipe pipeline 11 or the relevant position of plug 13, water injection pipe 21 also can be connected by metal tape or wire 25 with screen casing 12, and, also can by metal tape or wire 24 with or plug 13 is connected, to strengthen the stable and firm of water injection pipe 21.In addition, by with delivery port one end of water injection pipe 21 by metal tape or wire 24 with or plug 13 be connected, make delivery port one end more stable to pocket 32 jet water courses the time, minimizing is rocked.Thereby can more effectively stir from horizontal well 31 and flow into the ickings of pocket 32 or the mixture of coal dust and water, increase its flowability.
Need to prove, the present technique field personnel should be able to expect, among the utility model embodiment, described metal tape or wire can use other materials fully, the material that can play the effect of being connected and fixed as plastics, nylon etc. replaces, and can adopt any attachment means known, as connected modes such as clip, sockets.The use of above-mentioned several connected mode or connection material does not exceed the scope that the utility model embodiment is protected.
In actual applications, as shown in Figure 3, the water injection pipe 21 among the utility model embodiment can be annular space space 22 parts that enter straight well by the straight well well head.Preferred mode is: can be provided with water filling threeway 41 between the well head production tree 42 of straight well well head and sleeve gate, water filling threeway 41 is communicated with described well head production tree 42 with sleeve gate and also be provided with water inlet 26; The water inlet end of water injection pipe 21 is communicated with water inlet 26.In the utility model embodiment, preferred, can adopt the PVC joint that the water inlet end of water injection pipe 21 is communicated with water inlet 26.
In the utility model embodiment, by between the well head production tree 42 of straight well well head and sleeve gate, being provided with water filling threeway 41, thereby can neither influence being communicated with of well head production tree 42 and sleeve gate, in addition, having realized again can be to water injection pipe 21 water filling by water inlet 26.In actual applications, water injection equipment can be arranged on the outer water pump of straight well, and is preferred.In order to increase the hydraulic pressure of water filling, can also select high-pressure hydraulic pump for use.
In sum, the concrete application mode of the utility model embodiment is, high-pressure hydraulic pump injects water inlet 26 with water, be ejected into the pocket 32 of straight well along water injection pipe 21 pipelines from delivery port by the water inlet end of the water injection pipe 21 that is communicated with water inlet 26, thereby make the ickings of pocket 32 or the mixture of coal dust and water increase flowability, thereby can enter in the oil pipe pipeline 11 by the smooth screen casing 12 that passes through, and then can be transported on the ground by sucker rod by the pump that is connected with sucker rod smoothly, avoided to adopt the pipe string to row because of the continuous accumulation of mixture in the prior art and buried extremely, and the row who causes adopts the defective that the pipe string can't be worked.
In the above-described embodiments, described water inlet also is provided with valve, can also be provided with the valve of water inlet in the water filling threeway.In actual applications, can begin or stop to described water injection pipe water filling by the switch of valve.
In the above-described embodiments, the delivery port position of water injection pipe 21 can also be set to be lower than the position of described screen casing 12.Because the position of pocket 32 will be lower than screen casing 12, so the delivery port position of water injection pipe 21 is set to be lower than the position of described screen casing 12, owing to shortened the distance of delivery port and pocket 32, thereby the current that reinforcement water injection pipe 21 ejects are to the impact force of the mixture of the ickings that enters pocket 32 or coal dust and water.And then make wherein ickings or the mixture of coal dust and water better mobile, avoided the accumulation of the mixture of ickings or coal dust and water effectively.
As shown in Figure 4, in the above-described embodiments, the delivery port position of water injection pipe 21 specifically can be 1 to 2 meter of the position that is lower than screen casing 12.Also be equiped with tubing nipple 15 between screen casing 12 and the plug 13; Delivery port one end of water injection pipe 21 is fixedlyed connected with tubing nipple 15.Generally speaking, effect preferably can be obtained at 1 to 2 meter, the position that is lower than screen casing 12 in the delivery port position, owing to be High-Pressure Water in the water injection pipe 21, so, if the delivery port of water injection pipe 21 is not fixed, can produce comparatively violent wow and flutter, thereby influence is used in jet water course.The delivery port of fixedly water injection pipe 21 for convenience, the utility model embodiment also has been provided with tubing nipple 15, and described tubing nipple 15 is installed between screen casing 12 and the plug 13, thereby can be so that an end of the delivery port of water injection pipe 21 is fixed on the tubing nipple 15.Like this, the delivery port of water injection pipe 21 just can be fixed, thereby has avoided the wow and flutter of the delivery port of water injection pipe 21.
In above-mentioned all embodiment, described water injection pipe can be continuous pipeline, and is because the current in water injection pipe are High-Pressure Water, so the utility model embodiment preferably uses continuous conduit, so that the compression resistance of water injection pipe is stronger, more durable.Avoid in use the damage that the junction compressive resistance that can have because of the pipeline of water injection pipe causes inadequately.
Because the resistance to pressure of plastic-aluminum pipe better, also has characteristics such as good impact resistance, anticorrosive and long service life, so preferred, among the utility model embodiment, described continuous conduit can be the plastic-aluminum pipe.In order to be applicable to the annular space space of straight well, the utility model is among the embodiment, and the caliber of the plastic-aluminum pipe of employing can be 4/8 inch or 6/8 inch.Adopt the plastic-aluminum pipe of 4/8 inch or 6/8 inch, both can guarantee the water yield of water filling, also avoided crossing the laying difficulty of the water injection pipe that is slightly caused because of water injection pipe.
Each embodiment adopts the mode of going forward one by one to describe in this manual, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (10)
1. a coal bed gas row adopts pipe, it is characterized in that, comprises oil pipe assembly and water injection pipe;
Described oil pipe assembly comprises oil pipe pipeline, screen casing and plug;
Described water injection pipe enters the annular space space by the straight well well head, and be arranged in parallel with described oil pipe assembly, and is fixedly connected on the described oil pipe assembly.
2. adopt pipe according to the described row of claim 1, it is characterized in that, the delivery port position of described water injection pipe is lower than the position of described screen casing.
3. adopt pipe according to the described row of claim 2, it is characterized in that, the delivery port position of described water injection pipe is lower than 1 to 2 meter of the position of described screen casing.
4. adopt pipe according to the described row of claim 3, it is characterized in that, also be equiped with tubing nipple between described screen casing and the plug; Delivery port one end of described water injection pipe is fixedlyed connected with described tubing nipple.
5. adopt pipe according to arbitrary described row in the claim 1 to 4, it is characterized in that, described water injection pipe is fixedlyed connected with the oil pipe assembly by tubing centrilizer.
6. adopt pipe according to the described row of claim 5, it is characterized in that, described water injection pipe is a continuous conduit.
7. adopt pipe according to the described row of claim 6, it is characterized in that, described continuous conduit is the plastic-aluminum pipe.
8. adopt pipe according to the described row of claim 7, it is characterized in that, the caliber of described plastic-aluminum pipe is 4/8 inch or 6/8 inch.
9. described according to Claim 8 row adopts pipe, it is characterized in that, described water injection pipe enters the annular space space by the straight well well head and is specially: be provided with the water filling threeway between the well head production tree of straight well well head and sleeve gate, described water filling threeway is communicated with described well head production tree and sleeve gate and also is provided with water inlet; The water inlet end of described water injection pipe is communicated with described water inlet.
10. adopt pipe according to the described row of claim 9, it is characterized in that, described water inlet also is provided with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202862626U CN201756917U (en) | 2010-08-09 | 2010-08-09 | Production pipe for coal bed gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202862626U CN201756917U (en) | 2010-08-09 | 2010-08-09 | Production pipe for coal bed gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201756917U true CN201756917U (en) | 2011-03-09 |
Family
ID=43644189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202862626U Expired - Lifetime CN201756917U (en) | 2010-08-09 | 2010-08-09 | Production pipe for coal bed gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201756917U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936137A (en) * | 2010-08-09 | 2011-01-05 | 北京奥瑞安能源技术开发有限公司 | Discharging and mining pipe for coalbed methane |
| CN102747956A (en) * | 2012-07-24 | 2012-10-24 | 吴有增 | Coal bed gas pipe layout device and pipe layout method thereof |
| CN102767349A (en) * | 2012-07-12 | 2012-11-07 | 中国石油天然气股份有限公司 | Coalbed methane horizontal well screen pipe suspension well completion method |
| CN104251136A (en) * | 2013-06-28 | 2014-12-31 | 中国石油天然气股份有限公司 | Determination method for coal submergence depth of coal-bed gas well |
| CN108240193A (en) * | 2016-12-23 | 2018-07-03 | 中国石油天然气股份有限公司 | A kind of coal bed gas horizontal well card-dispelling tubular pile and method |
-
2010
- 2010-08-09 CN CN2010202862626U patent/CN201756917U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101936137A (en) * | 2010-08-09 | 2011-01-05 | 北京奥瑞安能源技术开发有限公司 | Discharging and mining pipe for coalbed methane |
| CN101936137B (en) * | 2010-08-09 | 2012-10-10 | 北京奥瑞安能源技术开发有限公司 | Discharging and mining pipe for coalbed methane |
| CN102767349A (en) * | 2012-07-12 | 2012-11-07 | 中国石油天然气股份有限公司 | Coalbed methane horizontal well screen pipe suspension well completion method |
| CN102767349B (en) * | 2012-07-12 | 2015-05-27 | 中国石油天然气股份有限公司 | Coalbed methane horizontal well screen pipe suspension well completion method |
| CN102747956A (en) * | 2012-07-24 | 2012-10-24 | 吴有增 | Coal bed gas pipe layout device and pipe layout method thereof |
| CN104251136A (en) * | 2013-06-28 | 2014-12-31 | 中国石油天然气股份有限公司 | Determination method for coal submergence depth of coal-bed gas well |
| CN104251136B (en) * | 2013-06-28 | 2017-03-15 | 中国石油天然气股份有限公司 | A kind of determination method that coal bed gas well coal is not spent |
| CN108240193A (en) * | 2016-12-23 | 2018-07-03 | 中国石油天然气股份有限公司 | A kind of coal bed gas horizontal well card-dispelling tubular pile and method |
| CN108240193B (en) * | 2016-12-23 | 2021-01-29 | 中国石油天然气股份有限公司 | Coal bed gas horizontal well unfreezing tubular column and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110309 Effective date of abandoning: 20121010 |